• Title/Summary/Keyword: student's t distribution

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A Comparative Study on Dietary Life and Recognition of Diet Related Factors in Elementary, Middle and High School Students (초.중.고 학생의 식생활 실태 및 인식 비교 연구)

  • Lee, Bo-Suk
    • Journal of the Korean Dietetic Association
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    • v.10 no.3
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    • pp.364-374
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    • 2004
  • This Study was carried out to investigate dietary life and recognition of diet related factors in elemantary, middle and high school students. This study was surveyed by questionnaires and data were analyzed by SPSS program. Comparative analysis was conducted according to three school student groups(elementary childrens, middle school students, high school students). The subjects were 1,886 school students(female 893, male 959) of 51 schools in nationalwide region. The Distribution of subjects was elementary school childrens 544, middle school students 661 and high school students 681. The results are summarized as follows. Only Sixty percent of the subjects had breakfast regularly. About one forth of the subjects had the habit of skipping breakfast or eating 2-3 times per week. Pricipal reasons of skipping breakfast were 'busy'(50.7%) and 'not delicious or poor appetite'(31.0%). Regularity of having breakfast and reasions of skipping breakfast were significant differences according to school student groups(p<0.001 respectively). About half of the subjects didn't have sufficient amounts in breakfast. Most subjects(92.1%) had lunch regularly by virtue of school lunch service. One forth of the subjects had dinner irregularly. Pricipal reasons of skipping dinner were 'not delicious'(41.7%), 'busy'(15.1%) and 'weight loss'(14.3%). Regularity of having dinner and reasons of skipping dinner were significant differences according to school student groups(p<0.01, p<0.001 respectively). The most delicious meal was dinner in 56.7% of the subjects and lunch in 37.1% of the subjects. There was significant difference in recognition of most delicious meal according to school student groups(p<0.001). Only ten percent of the subjects thought that nutrition education was not needed. Diettitian was recognized as nutrition educator in sixty percent of the subjects. Only 5 percent of the subject recognized teacher as nutrition educator. There were not significant differences in most delicious meal and nutrition educator according to operation type of school lunch service. The findings suggested continuous attention and guidance for healthy dietary life and necessity of nutrition education for both school students and their parents.

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Brands and Competing Factors in Purchasing Hand Phones in the Malaysian Market

  • Rahman, Mahfuzur;Ismail, Yusof;Albaity, Mohamed;Isa, Che Ruhana
    • The Journal of Asian Finance, Economics and Business
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    • v.4 no.2
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    • pp.75-80
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    • 2017
  • Hand phones are standard paraphernalia among university students. Factors that motivate them to own the gadget would be of interest to both the students as well as marketers. Hand phone usage is an unexamined field in academic literature, this exploratory study attempts to investigate student purchasing motives in cellular phone markets. It also intends to know the student's satisfaction with the different services and its future impact on socio economic changes. In this study, undergraduates (n=336) were requested to specify their purchase criteria of hand phone. The instrument used in the study to collect feedback from the respondents contains a combination of open-ended and scaled questions, and some background demographics. The study employed content analysis, Pearson's correlation, and t-tests as the primary tools to analyze the responses. Results show that brand was rated as the most important factor in student purchase decisions. Other factors, arranged in decreasing order of importance comprise price, product quality, features, durability, availability, promotion, and post purchase service. Brand and price correlated significantly. It is also observed that there is very little difference regarding preference between brand and price in purchasing a hand phone. Marketers may formulate suitable strategies out of the findings to promote hand phones to university undergraduates in Malaysia by emphasizing at brands and price.

Using DITI to examine the pattern of subcutaneous heat of the climacteric patients (DITI를 이용한 갱년기 환자의 체열분포 양상)

  • Kim, Ro-Sa;Choi, Jung-Eun;Kim, Young-Suk;Lee, Kyung-Sub
    • Journal of Oriental Medical Thermology
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    • v.1 no.1
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    • pp.38-46
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    • 2002
  • 1. Objectives Among many symptoms that the climacteric patients complain of, the major subjective symptom is both heat in the upper part and cold in the lower part of the body(e.g foot, knee, and leg). We use DITI as a method to prove the symptoms of climacteric patients such as both heat in the upper part and cold in the lower part of the body, diagnose these symptoms, and follow up the progress of the clinical treatments. 2. Subjects and Methods We compare the subcutaneous heat of the climacteric patients with the symptom of heat in the upper part and cold in the lower part of the body with young women without any specific disease. The age distribution of the experimental group is 28 patients in 40's, and 22 in 50's. The mean age of the experimental group is $48.5{\pm}4.25$. The age distribution of the control group is 17 patients in teen, 26 in 20's, 7 in 30's. The mean age of the control group is $23.31{\pm}6.45$. We measure the subcutaneous heat on the cheeks, upper arms, palms, thighs, knees, dorsum pedis, lower back, hip, upper abdomen, lower abdomen of both groups and analyse the results. 3. Statistical methods All the results are statiscally analysed using student T-test of Microsoft Exel program. Statistically significant value by the analysis of variance procedure is P<0.05. 4. Results 1. The subcutaneous heat of the whole body of the experimental group shows hypothermia compared with control group, and the hypothermic pattern gets severe on the periphery. ${\Delta}T$ between the right and left side of the body in experimental group is larger than that of control group. 2. ${\Delta}T$ between the cheeks and the hypogastric in the experimental group is significantly larger than that of the control group, which shows cold face. 3. ${\Delta}T$ between the upper arms and the palms in the experimental group is significantly larger than that of the control group, which shows cold hand. 4. ${\Delta}T$ between the thighs and the knees in the experimental group is significantly larger than that of the control group, which shows cold knee. 5. ${\Delta}T$ between the thighs and the feet in the experimental group is significantly larger than that of the control group, which shows cold foot. 6. ${\Delta}T$ between the hip and the lower back in the experimental group is significantly larger than that of the control group. That shows the Lower back is warmer than the hip. 7. ${\Delta}T$ between the upper and the lower abdomen in the experimental group is significantly larger than that of the control group, which shows cold hypogastric.

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A Study of Student's Health Promoting Behaviors (일부 대학생들의 건강증진행위)

  • Kim Hyun-Li;Min Hyun-Ok
    • Journal of Korean Public Health Nursing
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    • v.9 no.2
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    • pp.80-91
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    • 1995
  • This Study was conducted to describe relatioship between health promoting behaviors and Self-efficacy of 427 Students during the period form June 1. 1994 to June 30. 1994. The research Scale used Kim and Choe's (994) that was modified Sheredr and Maddux's (1982) Self-efficacy measurement scale. Data was. analysed by SPSS-PC program. and reavealed to percentage. t-value. F-value and Pearson's correlation coefficency. 1. The general characteristics of subjects was that men $55\%$. average age 22.5years old. There are the most highest destribution in religion. abscence $52.2\%$. and in residence. own house $49.9\%$ There are 129 subjects $(30.2\%)$ regularity exerciseed now. and 46 subjects $(35.7\%)$ exercise time was above 30 mins below 1 hour. There are 78 subjects $(60.5\%)$ above 4 times per weeks the most highest distribution in exercise times. 2. Health promoting behaviors score of subjects was 94.287 (2.548) and self-efficacy was 967.63 (69.12) 3. There are statistically significant difference in health promoting behavior score according to sex. sibling number. residence place (p<.05). In the subconcept of health promotion lifestyle profile (HPLP). there was the more higher score in men than women for self actualization (t=2. 67. p=.008). exercise(t=5.92. p=.000). There are statistically significant difference in nutrition according to sibling number (F=3.05. p=0.01). resident place (F=2.93. p=0.02). and in interpersonal support according to religion (F=2.88. p=0.02). 4. In the Self-efficacy score. there was statistically significant difference according to sex (t= 5.88. p=.000). 5. There was postive correlation between health promoting behavior and self-efficacy (r=.43. p=.000). On the basis of this result. I hope that develp Korean type health promoting behavior scale to understand health promotion for people. and nursing intervention method to improve health promoting behavior through increasment of Self-efficacy.

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The U.S. Contagion Effects on Foreign Direct Investment Flows in Developing Countries

  • HEMA, Itsarawadee;OSATHANUNKUL, Rossarin
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.4
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    • pp.55-67
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    • 2021
  • This study aims to measure the lower tail dependence as risk contagion from the U.S. economy to 18 developing countries affecting FDI inflows using time-series data from 2005 to 2019. Firstly, we utilize four dynamic copula models, namely, Student-t, Clayton, rotated survival Gumbel, and rotated survival Joe, to measure the tail dependence structure between the U.S. and each developing country's real GDP growth. Secondly, we use the regression model to explore the contagion effects on FDI inflows. The results show that there is evidence of the tail dependence between the U.S and developing economies, indicating the presence of the contagion effects. Primarily, we observe that the degree of contagion effects of the global financial crisis varies across countries; a strong impact is observed in Chinese, South African, Russian, Colombian, and Mexican economic growth. Furthermore, we found significant contagion risk affecting FDI inflows positively in China, Indonesia, Columbia, Morocco, and negatively in the Philippines, Bulgaria, and South Africa. This study demonstrates the usefulness of the copulas model in terms of examining contagion. Our findings shed light on the influence of sound policies and regulations to cope with both positive and negative consequences of the contagion on the capital movement.

A Clinical Analysis of the Correlation between Acne Distribution in the Jaw and Emmeniopathy (월경병과 하악부 면포 발생과의 관계에 대한 임상적 고찰)

  • Yu Hyun-jung;Lee Seung-deok;Choi In-hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.17 no.2
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    • pp.87-93
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    • 2004
  • Objective: We would like to find out the correlation between acne distribution in the jaw and the emmeniopathy. Methods: The clinical studies were made on 43 cases of acne vulgaris who visited to Department of Dermatology, Dongguk University Gangnam Oriental Medical Hospital during from August, 2002 to July, 2004. We divided the patients into two groups. A group had the emmeniopathy. B group didn't have the emmeniopathy. In the acne grade and the number of acne, we investigated the difference between A and B group statistically. We used the statical methods of student's t-test on the number of acne and wilcoxon rank sum test on acne grade. Results: The mean age was 25.8${\pm}$4.80 in A group and 27.6${\pm}$5.68 in B group. There were painful menstruation, quality of thickness, menstrual cycle disorder, menstrual amount disorder, dark purple color, premenstrual acne in A group with the emmeniopathy. The acne grade was 1.69${\pm}$1.28 in A group, 1.43${\pm}$1.28 in B group. The number of acne was 3.66${\pm}$3.15 in A group, 4.36${\pm}$4.07 in B group. P-value was 0.52 in acne grade and 0.25 in the number of acne. We investigated no difference between A and B group statistically on acne grade and the number of acne. Conclusions: We needed the further study about the factor which affect on acne distribution and emmeniopathy.

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Evaluation of the Quality Attribute and Satisfaction on School Foodservice in 2010 (2010년도 조사대상별 학교급식 만족도 및 급식품질 속성 평가)

  • Yang, Il-Sun;Yi, Bo-Sook;Park, Moon-Kyung;Baek, Seung-Hee;Chung, Yoo-Sun;Jeong, Jin-Yi;Kim, Yoon-Ji;Kim, Hye-Young
    • Korean Journal of Community Nutrition
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    • v.18 no.5
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    • pp.491-504
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    • 2013
  • The purposes of this study were to analyze the quality attributes, quality factors and customer satisfaction in school foodservice and to provide suggestions for improving school foodservice environments. The survey was distributed to different respondents (5,771 students, 2,045 parents, and 1,981 faculty members) at different types of schools (elementary school, middle school, and high school) on September 2010 in 16 cities and provinces. The data were analyzed using SPSS for descriptive analysis, one-way ANOVA, t-test and multiple linear regression analysis. First, all foodservice quality attributes were significant different by respondents and the faculty had higher scores than parents and students. A comparison of scores by respondents and distribution place demonstrated that classroom of student and parents had a higher score for quality attributes. The overall satisfaction with school foodservice was significant different by respondents and higher for classroom than for dining hall for student and parents. In comparison of annual data, there was decreased overall satisfaction and quality attributes in student and parents. Second, in the regression results, which showed the effects of the foodservice quality attributes on overall satisfaction by respondents and distribution place, improvements of 'food taste', 'pleasant foodservice environment', and 'kindness of employee' would increase satisfaction in most of the respondents. Third, the overall satisfaction with school foodservice was higher for nutrition teachers than dietitians for students and faculty. Therefore, the operators will need to make different efforts based on each customer needs to improve the overall satisfaction on school foodservice.

The Effect of Sopungchengyoungtanggami-bang Extract to Recover Function of Stratum Corneum on Mice Model after Atopic Dermatitis Elicitation. (아토피 피부염을 유발한 동물모델에서 消風淸營湯加味方이 각질층 기능회복에 미치는 영향)

  • Park, Eung-sik;Choi, In-hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.16 no.3
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    • pp.96-115
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    • 2003
  • Introduction and Objectives : Administrating the Sopungchengyoungtanggami-bang (SCG) extract on to the atopic dermatitis(AD) is to study change of external dermal formation, change of leukocytes in vasculature, change of lipid formation in stratum corneum and distribution of ceramide and this study is done through forcing injury to rat's back skin which are lipid protect formation in stratum corneum. Materials and Methods : The AD which caused intentionally using the external application on the rat's back skin was used the SCG. The change of leukocytes in vasculature has been identified through optima 5.2 and student t-test and the results were made into dermal formation graph. Results : After dispensing SCG extract into the AD, the dermal injury was decreased. Especially, recover of lipid protection formation which include lipid and ceramide in stratum corneum is suppressing acute inflammation that some factors are PKC, TNF-${\alpha}$, IL-12B which controled the secretion of relating inflammatory cytokine, also went onto decrease of angiogenesis, and the decrease of degranulated mast cell. In addition, the decrease of epithelial injury also caused the growth of cell to decrease in stratum basale and cytoclasis. In the vasculature, the leukocytes were also decreased and it could relate to decrease AD Conclusions : Thus, SCG has effect on AD suppressing the dermal injury through recovering of lipid protection formation in stratum corneum.

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The Effect of Saingheylyunbooemgami Extract to Revover Function of Stratum Corneum on Mice Model after Atopic Dermatitis Elicitation. (生血潤膚飮加味方이 아토피 피부염을 유발한 동물모델의 각질층 기능회복에 미치는 영향)

  • Lee, Hyun-woo;Ku, Young-hui;Choi, In-hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.16 no.1
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    • pp.112-129
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    • 2003
  • Introduction and Objectives : Applying the saingheylyunbooemgami(SY) extract on to the atopic dermatitis(AD) is to study change of external dermal formation, change of leukocytes in vasculature, change of lipid formation in stratum corneum and distribution of ceramide and this study is done through forcing injury to rat's back skin which are lipid protect formation in stratum corneum. Materials and Methods : The AD which caused intentionally using the external application on the rat's back skin was used the SY. The change of leukocytes in vasculature has been identified through optima 5.2 and student t-test and the results were made into dermal foramtion graph. Results : After dispensing SY extract into the AD, the dermal injury was decreased, Especially, recover of lipid protection formation which include lipid and ceramide in stratum corneum is suppressing acute inflammation that some factors are PKC, TNF-${\alpha}$, lL-12B which controled the secretion of relating inflammatory cytokine, also went onto decrease of angiogenesis, and the decrese of degranulated mast cell. In addition, the decrease of epithelial injury also caused the growth of cell to decrease in stratum basale and cytoclasis. In the vasculature. the leukocytes were also decreased and it could relate to decrease AD. Conclusions : Thus. SY has effect on AD suppressing the dermal injury through recovering of lipid protection formation in stratum corneum.

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Correlation between degree of pain at the emergency room and progression of appendicitis based on computed tomography (응급실 방문 당시 통증 정도와 computed tomography 기반 충수염 진행 정도와의 상관관계)

  • Ryu, Hyoung Sun;Shin, Su Jeong
    • Journal of The Korean Society of Emergency Medicine
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    • v.29 no.6
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    • pp.656-662
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    • 2018
  • Objective: Acute appendicitis is one of the most urgent surgical problems. Several factors have been considered as predictors of perforation, but this study focused on the change in pain pattern. The degree of pain and progression of appendicitis were analyzed assuming that the pain intensity would increase until the perforation and the degree of pain would decrease immediately after the perforation occurred. Methods: In this study, 385 out of 467 patients, who were diagnosed with appendicitis in a single institution and aged between 15 and 65 years, were reviewed retrospectively. The patients' pain scores and the diameters of appendices were analyzed along with the accompanying complications. Correlation analysis and a Student's t-test were performed. Results: In patients with complicated appendicitis, the mean numerical rating scale (NRS) was slightly higher than that of simple appendicitis, but there was no significant difference in the absolute value. Only the size of the appendix showed meaningful differences according to the combined computed tomography findings. The NRS distribution or appendiceal size did not correlate with the time duration from symptom onset. Conclusion: The appendiceal size tended to increase with progressing appendicitis. No significant correlation was observed between the patient's pain level and complications. The time duration from symptom onset did not show a relationship with the progression of appendicitis.